Effect of Gd3+ substitution on dielectric properties of nano cobalt ferrite |
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| Authors: | Anu Rana O.P. Thakur Vinod Kumar |
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| Affiliation: | 1. School of Applied Sciences, Netaji Subhas Institute of Technology, New Delhi, India;2. DCR Univ. Sci. Tech., Murthal, Haryana, India;1. Department of Physics, University of Rajasthan, Jaipur, India;2. Department of Physics, VEC Lakhanpur, Sarguja University, Ambikapur (C.G.), India;3. Department of Physics, S. S. Jain Subodh P. G. College, Jaipur, India;1. Department of Physics, Bangalore University, Bangalore 560056, India;2. Department of Physics, University College of Science, Osmania University, Saifabad, Hyderabad 500 004, India;3. Materials Research Centre, Indian Institute of Science, Bangalore 560012, India;4. School of Physics, Eternal University, Baru Sahib 173101, Himachal Pradesh, India;1. Department of Chemistry, University College of Science, Osmania University, Hyderabad, 500007, Telangana State, India;2. Department of Physics, University College of Science, Osmania University, Hyderabad, 500007, Telangana State, India;3. Department of Physics, Dr. Babasaheb Ambedkar Marathwada University, Aurangabad, M.S., India;4. Department of Applied Physics, Aligarh Muslim University, Aligarh, 202002, India;5. Solid State Physics Division, Bhabha Atomic Research Centre, Mumbai, 400 085, India;1. Vivekanand Arts and Sardar Dalipsingh Commerce and Science College, Aurangabad, 431004 Maharastra, India;2. Department of Physics, Dr. Babasaheb Ambedkar Marathwada University, Aurangabad, 431004 Maharastra, India;1. Department of Physics, DCR University of Sci. & Tech., Murthal, Sonepat 131039, Haryana, India;2. CSIR-National Physical Laboratory, Dr. K.S. Krishnan Marg, New Delhi 110012, India |
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| Abstract: | CoGdxFe2 ? xO4 (x = 0.0, 0.1, 0.3, 0.5) nano magnetic ferrite particles were synthesized by chemical co-precipitation method. The variation of dielectric parameters like dielectric constant, dielectric loss, capacitance and resistance for different Gd3+ compositions has been measured at room temperature for frequency dependence in the range of 100 Hz to 10 MHz using impedance analyzer. Results of measurements reveal strong dependence of dielectric parameters on frequency and Gd3+ ion content. Dielectric constant, dielectric loss, capacitance and resistance decrease with increasing frequency for all the CoGdxFe2 ? xO4 compositions. Increase in Gd3+ ion composition in material, increases the values of dielectric constant, dielectric loss and capacitance while decreases the electrical resistance of nano-particles. A qualitative explanation is given for the composition and frequency dependence of dielectric parameters. |
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